CN109055792A - A method of preparing Al-Ti-C intermediate alloy - Google Patents
A method of preparing Al-Ti-C intermediate alloy Download PDFInfo
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- CN109055792A CN109055792A CN201811103620.2A CN201811103620A CN109055792A CN 109055792 A CN109055792 A CN 109055792A CN 201811103620 A CN201811103620 A CN 201811103620A CN 109055792 A CN109055792 A CN 109055792A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
Abstract
A kind of preparation method of Al-Ti-C intermediate alloy the steps include: that potassium fluotitanate and graphite powder according to preset ratio ground and mixed, are prefabricated into the aluminium medicine core silk comprising mixture by (1)；(2) prefabricated aluminium medicine core silk is connected in the DC power cathode of adjustable current or the AC power source of adjustable current, and the other end is connected on graphite guide torch or graphite block；(3) technical pure temperature of aluminum liquid is controlled at 800 DEG C -1000 DEG C, while covers ice crystal or other deslagging agents on molten aluminum surface；Graphite guide torch or graphite block are pre-filled with molten aluminum, then prefabricated aluminium medicine core silk is put into above molten aluminum and generates electric arc, melts prefabricated aluminium medicine core silk, molten aluminum is the molten aluminum or quantitative molten aluminum of continuous casting flowing；(4) Al-Ti-C intermediate alloy component requirements are pressed, prefabricated aluminium medicine core silk is added to molten aluminum, purified processing continuous casting and rolling molding or casting ingot rolling.
Description
Technical field
The invention belongs to non-ferrous metallurgies and casting technology field, and in particular to the preparation skill of Al-Ti-C intermediate alloy
Art.
Background technique
Aluminium and aluminium alloy are most widely used one kind nonferrous materials in modern industry, in electric power, machine-building, boat
It is widely applied in the industries such as empty space flight, communications and transportation, building, packaging.With science and technology and economic rapid development in recent years,
It is also higher and higher to the performance requirement of aluminum and aluminum alloy mateial, and crystal grain refinement has the performance for improving aluminium and alloy product
Very important effect.The refinement of aluminium and aluminium alloy generally goes through rapid cooling, mechanical stirring and addition fining agent to complete, and
Adding fining agent is easy to operate, thinning effect the best way.Current most popular fining agent mainly have Al-Ti-B,
Al-Ti-C intermediate alloy, and Al-Ti-B alloy is being reduced because of its using effect and the current usage amount of other problems.It is so far
Only, it is continuously improved in the method for production Al-Ti-C alloy, the method for preparing Al-Ti-C intermediate alloy has melting-reaction method, height
Warm self- propagating method and thermal explosion method etc..
In recent years, domestic that a large amount of research work has been carried out to the quality for improving Al-Ti-C alloy, achieve it is very big into
Exhibition, the method that patent 200610046996(prepares Al-Ti-C intermediate alloy) with ice crystal be coverture, by titanyl compound,
High-purity carbon source and metallic aluminium are put into crucible, restore after ingot casting up to Al-Ti-C intermediate alloy；Patent 00410074369(is a kind of
The preparation method of Al-Ti-C intermediate alloy) by CaC2, potassium fluotitanate mixture be added in aluminum melt, remove the floating of bath surface
Al-Ti-C intermediate alloy is made in slag, moulding by casting；A kind of titaniferous of patent 98119377(, carbon contained aluminium-base intermediate alloy preparation
Method), fluotitanate, graphite powder and activator is added into molten aluminum in proportion, slagging-off, casting ingot obtain closing among product
Gold；A kind of preparation method of Al-Ti-C intermediate alloy of patent 200610127939() Al, Ti, C powder will be mixed in proportion to simultaneously mould
Stick is pressed into as consutrode, and melting；A kind of Al-Ti-C master alloy grain refiner of patent 02156761() in molten aluminum
Carbonaceous material and titanium is added and stirs.A kind of preparation method of aluminium-titanium-carbon intermediate alloy of patent 00123953.8() incuding
Commercial-purity aluminium is heated to 1100-1350 DEG C in furnace, is then added pure titanium and graphite powder simultaneously, direct casting ingot-forming or passes through company
Casting equipment for continuously rolling is prepared into wire rod.Although the effect of electric arc, fusing, the diffusion of titanium valve is utilized in patent 201710568449.1
Reacting for titanium and carbon is limited to a certain extent, affects the formation of TiC.All in all, although using different carbon sources
And titanium source, grain refiner Al-Ti-C alloy, but complex process can be produced, at high cost, fining agent is unable to one-pass molding or Ti
C forms difficulty, keeps thinning effect poor, high rejection rate, and product quality is low.
Above-mentioned patent is probed into from preparation principle and technology of preparing, achieves certain progress, but these preparation sides
Method has the following problems in various degree:
Slag inclusion content is high in 1.Al-Ti-C alloy, improves the viscosity of molten aluminum after fusing, field trash is not easy from molten aluminum clearly
It removes；
There are the intermetallic compounds of bulk in 2.Al-Ti-C alloy, there is certain metamorphism, solidifying in molten aluminum but then
Gu agglomeration is equivalent to field trash during, make during following process in product and surface quality reduce, intensity
It reduces, deformation performance deteriorates；
3. production technology is complicated, then method that first ingot casting uses extrusion forming is squeezed into the diameter of silk used in alterant, needs big
Type equipment, and nonuniform organization, influence modification effect, it is difficult to accomplish scale production；
4. production technology is unstable, the requirement to operative employee is high, and the unstable quality of product influences the quality of subsequent product；
5. the titanium for entering molten aluminum is in shorter time fusing difficulty and to easily cause reunion from Titanium fusing, closing
Titanium is unevenly distributed in gold.
Therefore, a kind of method for researching and developing Al-Ti-C intermediate alloy for being easy to mass production, and TiC in intermediate alloy
Grain is tiny, Dispersed precipitate becomes field problem in the urgent need to address.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of Al-Ti-C intermediate alloy.
The present invention is a kind of preparation method of Al-Ti-C intermediate alloy, be the steps include:
(1) potassium fluotitanate and graphite powder according to preset ratio ground and mixed, it is prefabricated into the aluminium medicine core silk comprising mixture；
(2) prefabricated aluminium medicine core silk is connected in the DC power cathode of adjustable current or the AC power source of adjustable current,
The other end is connected on graphite guide torch or graphite block；
(3) technical pure temperature of aluminum liquid is controlled at 800 DEG C -1000 DEG C, while covers ice crystal or other slagging-off on molten aluminum surface
Agent；Graphite guide torch or graphite block are pre-filled with molten aluminum, then prefabricated aluminium medicine core silk is put into above molten aluminum and generates electricity
Arc melts prefabricated aluminium medicine core silk, and molten aluminum is the molten aluminum or quantitative molten aluminum of continuous casting flowing；
(4) Al-Ti-C intermediate alloy component requirements are pressed, prefabricated aluminium medicine core silk are added to molten aluminum, purified processing continuous casting and rolling at
Type or casting ingot rolling.
Usefulness of the present invention is: the raw material that 1. present invention use is commercial-purity aluminium, potassium fluotitanate, graphite powder, fluorine titanium
The titanium atom restored in sour potassium enters molten aluminum, and required raw material is easy to get, and cost of material is lower, and is simplified process；2.
Al-Ti-C intermediate alloy prepared by the present invention, the continuous casting and rolling time is short, and crystal grain and intermetallic compound is made to be more evenly distributed carefully
It is small；It can play the role of crystal grain refinement to alloy cast ingot when intermediate alloy ingot die cast itself；What 3. the present invention was prepared
Al-Ti-C intermediate alloy fine microstructures, TiC are not easy agglomeration；4. the Al-Ti-C intermediate alloy TiC that the present invention is prepared,
TiAl3Stable content；5. the Al-Ti-C intermediate alloy that the present invention is prepared is experiments verify that have fine aluminium and aluminium alloy good
Good thinning effect；6. present invention process is simple, high-efficient, it is easy to scale industrial production.
Detailed description of the invention
Fig. 1 is the micro-organization chart for the Al-Ti-C intermediate alloy being prepared；Fig. 2 is among the Al-Ti-C being prepared
The SEM of alloy schemes；Fig. 3 is the XRD power spectrum for the Al-Ti-C intermediate alloy being prepared；Fig. 4 is untreated commercial-purity aluminium macroscopic view
Organization chart；The commercial-purity aluminium macroscopic organization chart that Fig. 5 is handled through Al-Ti-C intermediate alloy.
Specific embodiment
The present invention is a kind of preparation method of Al-Ti-C intermediate alloy, be the steps include:
(1) potassium fluotitanate and graphite powder according to preset ratio ground and mixed, it is prefabricated into the aluminium medicine core silk comprising mixture；
(2) prefabricated aluminium medicine core silk is connected in the DC power cathode of adjustable current or the AC power source of adjustable current,
The other end is connected on graphite guide torch or graphite block；
(3) technical pure temperature of aluminum liquid is controlled at 800 DEG C -1000 DEG C, while covers ice crystal or other slagging-off on molten aluminum surface
Agent；Graphite guide torch or graphite block are pre-filled with molten aluminum, then prefabricated aluminium medicine core silk is put into above molten aluminum and generates electricity
Arc melts prefabricated aluminium medicine core silk, and molten aluminum is the molten aluminum or quantitative molten aluminum of continuous casting flowing；
(4) Al-Ti-C intermediate alloy component requirements are pressed, prefabricated aluminium medicine core silk are added to molten aluminum, purified processing continuous casting and rolling at
Type or casting ingot rolling.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that fluorine-containing titanium in prefabricated aluminium medicine core silk
Sour potassium 20-40%, graphite powder, remaining is aluminium.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that graphite is through at 10% hydrofluoric acid of concentration
Reason, carbon dust are 500 mesh ~ 1200 mesh, and potassium fluotitanate granularity is -600 mesh of 300 mesh of potassium fluotitanate granularity.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that by above-mentioned graphite powder and potassium fluotitanate
With ball mill mix grinding, strengthens the titanium restored in potassium fluotitanate and react to form TiC with graphite powder, improve kinetics item
Part.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that above-mentioned potassium fluotitanate and graphite are mixed
It closes object and is prefabricated into aluminium medicine core silk, diameter 10-30mm.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that temperature of aluminum liquid control 800 DEG C-
1000 DEG C, the graphite rod or graphite block of connection power supply is first put into molten aluminum, then prefabricated aluminium medicine core silk is put into molten aluminum, makes its production
Raw high-temperature electric arc promotes the melting of carbon and reacts with titanium, improves the reactivity of titanium and carbon.
The preparation method of above-described Al-Ti-C intermediate alloy, it is characterised in that change electricity by changing size of current
The temperature of arc, current control is in 30A-100A.
Embodiment 1:
(1) by granularity be -600 mesh of 550 mesh -800 mesh of potassium fluotitanate and 500 mesh graphite powder according to 20% to 4.5% ratio
The medicine core filament that diameter is 10mm is made in mixing；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 25V, electric current 30A, are added
Into 1000 DEG C of fine aluminium liquid；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
As shown in Figure 1 and Figure 2, the Al-Ti-C intermediate alloy being prepared is analyzed, finds stick, bulk TiAl3, most
20 μm of large scale, 10 μm of minimum dimension, shinny little particle TiC, having a size of 1.3 μm.
Embodiment 2:
(1) graphite powder of -900 mesh of the potassium fluotitanate of -350 mesh of 300 mesh and 600 mesh is mixed according to 25% to 5% ratio, is made
Diameter is the medicine core filament of 10mm；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 30V, electric current 45A, are added
Into 950 DEG C of fine aluminium liquid；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 33 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC, having a size of 1.1 μm.
Embodiment 3:
(1) graphite powder of -1000 mesh of the potassium fluotitanate of -400 mesh of 350 mesh and 700 mesh is mixed according to 30% to 5.5% ratio,
The medicine core filament that diameter is 15mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 25V, electric current 50A, are added
Into 950 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 25 μm of full-size, minimum ruler
Very little 11 μm, shinny little particle TiC, having a size of 1.2 μm.
Embodiment 4:
(1) graphite powder of -1100 mesh of the potassium fluotitanate of -450 mesh of 400 mesh and 800 mesh is mixed according to 35% to 6% ratio, system
The medicine core filament for being 20mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 26V, electric current 55A, are added
Into 900 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 20 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC, having a size of 1 μm.
Embodiment 5:
(1) graphite powder of -1200 mesh of the potassium fluotitanate of -500 mesh of 450 mesh and 900 mesh is mixed according to 40% to 6.5% ratio,
The medicine core filament that diameter is 20mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 16V, electric current 70A, are added
Into 800 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 22 μm of full-size, minimum ruler
Very little 11 μm, shinny little particle TiC, having a size of 1.5 μm.
Embodiment 6:
(1) graphite powder of -1200 mesh of the potassium fluotitanate of -550 mesh of 500 mesh and 1000 mesh is mixed according to 38% to 7% ratio, system
The medicine core filament for being 20mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 25V, electric current 80A, are added
Into 1000 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 32 μm of full-size, minimum ruler
Very little 10 μm, it is found that the size of TiC is 1-1.5 μm.
Embodiment 7:
(1) graphite powder of -1100 mesh of the potassium fluotitanate of -500 mesh of 450 mesh and 900 mesh is mixed according to 30% to 7.5% ratio,
The medicine core filament that diameter is 20mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 20V, electric current 85A, are added
Into 850 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 26 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC, having a size of 1.5 μm.
Embodiment 8:
(1) graphite powder of -1000 mesh of the potassium fluotitanate of -550 mesh of 500 mesh and 800 mesh is mixed according to 26% to 8% ratio, system
The medicine core filament for being 15mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 30V, electric current 90A, are added
Into 950 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 24 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC, having a size of 1.5 μm.
Embodiment 9:
(1) graphite powder of -900 mesh of the potassium fluotitanate of -600 mesh of 550 mesh and 700 mesh is mixed according to 33% to 8.5% ratio, system
The medicine core filament for being 20mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 30V, electric current 95A, are added
Into 900 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 28 μm of full-size, minimum ruler
Very little 14 μm, shinny little particle TiC, having a size of 1.3 μm.
Embodiment 10:
(1) graphite powder of -800 mesh of the potassium fluotitanate of -600 mesh of 500 mesh and 600 mesh is mixed according to 25% to 9.0% ratio, system
The medicine core filament for being 20mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 36V, electric current 65A, are added
Into 850 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 29 μm of full-size, minimum ruler
Very little 12 μm, shinny little particle TiC, having a size of 1.5 μm.
Embodiment 11:
(1) graphite powder of -700 mesh of the potassium fluotitanate of -550 mesh of 450 mesh and 500 mesh is added into mixing according to 34% to 9.5% ratio,
The medicine core filament that diameter is 20mm is made；
(2) medicine core or casting filament do cathode and graphite rod does anode, are connected respectively on the power supply of voltage 16V, electric current 60A,
It is added in 950 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 27 μm of full-size, minimum ruler
Very little 112 μm, shinny little particle TiC, having a size of 1.2 μm.
Embodiment 12:
(1) graphite powder of -800 mesh of the potassium fluotitanate of -500 mesh of 400 mesh and 550 mesh is mixed according to 28% to 7.0% ratio, system
The medicine core filament for being 15mm at diameter；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 36V, electric current 75A, are added
Into 900 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 26 μm of full-size, minimum ruler
Very little 11 μm, shinny little particle TiC, having a size of 1.3 μm.
Embodiment 13:
(1) graphite powder of -1000 mesh of the potassium fluotitanate of -450 mesh of 350 mesh and 650 mesh is mixed according to 30% to 7.5% ratio,
The medicine core filament that diameter is 20mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 16V, electric current 35A, are added
Into 850 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 26 μm of full-size, minimum ruler
Very little 13 μm, shinny little particle TiC, having a size of 1.3 μm.
Embodiment 14:
(1) graphite powder of -1100 mesh of the potassium fluotitanate of -400 mesh of 300 mesh and 750 mesh is mixed according to 27% to 8.0% ratio,
The medicine core filament that diameter is 20mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 36V, electric current 100A, are added
It arrives, in 1000 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 20 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC, having a size of 1.5 μm.
Embodiment 15:
(1) graphite powder of -1000 mesh of the potassium fluotitanate of -450 mesh of 350 mesh and 650 mesh is mixed according to 30% to 7.5% ratio,
The medicine core filament that diameter is 20mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 16V, electric current 110A, are added
Into 1100 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 60 μm of full-size, minimum ruler
Very little 13 μm, shinny little particle has reunion tendency TiC, having a size of 4.0 μm.
Embodiment 16:
(1) graphite powder of -1100 mesh of the potassium fluotitanate of -400 mesh of 350 mesh and 800 mesh is mixed according to 27% to 8.0% ratio,
The medicine core filament that diameter is 10mm is made；
(2) continuous casting or casting prodrug core filaments, graphite rod (or block) are connected respectively on the power supply of voltage 36V, electric current 20A, are added
Into 1200 DEG C of fine aluminium melt；
(3) reacted, purification and impurity removal, alloy wire of the continuous casting and rolling at 10mm or the continuous medicine feed core filaments ingot casting in casting, ingot casting
It is squeezed into the alloy wire of 10mm.
Al-Ti-C intermediate alloy analysis to being prepared, finds stick, bulk TiAl3, 20 μm of full-size, minimum ruler
Very little 10 μm, shinny little particle TiC is almost invisible.
Claims (7)
1. a kind of preparation method of Al-Ti-C intermediate alloy, which is characterized in that the steps include:
(1) potassium fluotitanate and graphite powder according to preset ratio ground and mixed, it is prefabricated into the aluminium medicine core silk comprising mixture；
(2) prefabricated aluminium medicine core silk is connected in the DC power cathode of adjustable current or the AC power source of adjustable current,
The other end is connected on graphite guide torch or graphite block；
(3) technical pure temperature of aluminum liquid is controlled at 800 DEG C -1000 DEG C, while covers ice crystal or other slagging-off on molten aluminum surface
Agent；Graphite guide torch or graphite block are pre-filled with molten aluminum, then prefabricated aluminium medicine core silk is put into above molten aluminum and generates electricity
Arc melts prefabricated aluminium medicine core silk, and molten aluminum is the molten aluminum or quantitative molten aluminum of continuous casting flowing；
(4) Al-Ti-C intermediate alloy component requirements are pressed, prefabricated aluminium medicine core silk are added to molten aluminum, purified processing continuous casting and rolling at
Type or casting ingot rolling.
2. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that in prefabricated aluminium medicine core silk
20-40% containing potassium fluotitanate, graphite powder, remaining is aluminium.
3. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that graphite is through concentration 10%
Hydrofluoric acid treatment, carbon dust are 500 mesh ~ 1200 mesh, and potassium fluotitanate granularity is -600 mesh of 300 mesh of potassium fluotitanate granularity.
4. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that by above-mentioned graphite powder and fluorine
Potassium titanate ball mill mix grinding strengthens the titanium restored in potassium fluotitanate and reacts to form TiC with graphite powder, improves reaction power
Condition.
5. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that above-mentioned potassium fluotitanate and
Graphite mixture is prefabricated into aluminium medicine core silk, diameter 10-30mm.
6. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that temperature of aluminum liquid control is existed
800 DEG C -1000 DEG C, the graphite rod or graphite block of connection power supply are first put into molten aluminum, then prefabricated aluminium medicine core silk is put into molten aluminum,
Make it generate high-temperature electric arc to promote the melting of carbon and react with titanium, improves the reactivity of titanium and carbon.
7. the preparation method of Al-Ti-C intermediate alloy according to claim 1, it is characterised in that by changing size of current
Change the temperature of electric arc, current control is in 30A-100A.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111363936A (en) * | 2020-03-19 | 2020-07-03 | 兰州理工大学 | Al-Ti-C-La intermediate alloy reinforced A356 composite material and preparation method thereof |
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| JPS5132567B1 (en) * | 1970-12-24 | 1976-09-13 | ||
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| CN1912160A (en) * | 2006-09-05 | 2007-02-14 | 中国铝业股份有限公司 | Preparation method of Al-TiC master alloy |
| CN101338381A (en) * | 2007-09-12 | 2009-01-07 | 葛炳灶 | Method for preparing refiner for aluminium-titan-carbon-strontium alloy |
| CN101608270A (en) * | 2009-07-27 | 2009-12-23 | 福州大学 | A kind of aluminium of high efficiency, low cost and aluminium alloy fining agent and preparation method thereof |
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| CN111363936A (en) * | 2020-03-19 | 2020-07-03 | 兰州理工大学 | Al-Ti-C-La intermediate alloy reinforced A356 composite material and preparation method thereof |
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